Dyfed-Powys Police is appealing for witnesses following a two vehicle traffic collision which occurred near Knighton over the weekend.
Police attended the scene following the collision, which took place at approximately 11.20am on Sunday November 7, on the A4113 near the border town.
The vehicles involved were a silver Peugeot Boxer van and a grey Hyundai Kona.
One person was taken to hospital with serious injuries.
A 42-year-old man has been arrested on suspicion of drink and drug driving and has been released under investigation whilst enquiries continue.
Anyone who witnessed the collision or anyone who has dashcam footage of the vehicles prior to the collision is asked to contact police.
Police can be contacted either online at: https://bit.ly/DPPContactOnline, by emailing [email protected], or by calling 101. If you are deaf, hard of hearing, or speech impaired text the non-emergency number on 07811 311 908. Quote reference: DP-20211107-171.